For all of use that use PERL a lot (which is me!), then any tidbit of help we can get is great!. From this article, we get the tidbit below.

If you’re primarily a Perl hacker and don’t use C much, you might find it annoying when you hit ‘K’ in command mode. That’s because VIM runs something like this:

    nmap K :Map 

I’ve just added the following to my .vimrc:

    noremap K :!perldoc   perldoc -f 

Now when you type ‘K’ in command mode, it will call up the appropriate perldoc, if possible.